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NK Cells Stimulate Recruitment of cDC1 into the Tumor Microenvironment Promoting Cancer Immune Control.
Cell ( IF 45.5 ) Pub Date : 2018-02-22 , DOI: 10.1016/j.cell.2018.01.004
Jan P Böttcher 1 , Eduardo Bonavita 2 , Probir Chakravarty 3 , Hanna Blees 1 , Mar Cabeza-Cabrerizo 1 , Stefano Sammicheli 1 , Neil C Rogers 1 , Erik Sahai 4 , Santiago Zelenay 2 , Caetano Reis e Sousa 1
Affiliation  

Conventional type 1 dendritic cells (cDC1) are critical for antitumor immunity, and their abundance within tumors is associated with immune-mediated rejection and the success of immunotherapy. Here, we show that cDC1 accumulation in mouse tumors often depends on natural killer (NK) cells that produce the cDC1 chemoattractants CCL5 and XCL1. Similarly, in human cancers, intratumoral CCL5, XCL1, and XCL2 transcripts closely correlate with gene signatures of both NK cells and cDC1 and are associated with increased overall patient survival. Notably, tumor production of prostaglandin E2 (PGE2) leads to evasion of the NK cell-cDC1 axis in part by impairing NK cell viability and chemokine production, as well as by causing downregulation of chemokine receptor expression in cDC1. Our findings reveal a cellular and molecular checkpoint for intratumoral cDC1 recruitment that is targeted by tumor-derived PGE2 for immune evasion and that could be exploited for cancer therapy.

中文翻译:


NK 细胞刺激 cDC1 招募到肿瘤微环境中,促进癌症免疫控制。



传统的 1 型树突状细胞 (cDC1) 对于抗肿瘤免疫至关重要,它们在肿瘤内的丰度与免疫介导的排斥反应和免疫治疗的成功相关。在这里,我们发现小鼠肿瘤中的 cDC1 积累通常取决于产生 cDC1 趋化剂 CCL5 和 XCL1 的自然杀伤 (NK) 细胞。同样,在人类癌症中,肿瘤内 CCL5、XCL1 和 XCL2 转录本与 NK 细胞和 cDC1 的基因特征密切相关,并且与患者总体生存率的提高相关。值得注意的是,肿瘤产生的前列腺素 E2 (PGE2) 导致 NK 细胞-cDC1 轴逃避,部分原因是损害 NK 细胞活力和趋化因子的产生,以及引起 cDC1 中趋化因子受体表达的下调。我们的研究结果揭示了肿瘤内 cDC1 募集的细胞和分子检查点,该检查点是肿瘤衍生的 PGE2 的靶标,可用于免疫逃避,并可用于癌症治疗。
更新日期:2018-02-09
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